A Cloaking Device for Planet Earth

Okay, this one is for sci-fi lovers and those that love Star Wars and Star Trek.
Under the assumption that Earth wants to “protect” itself from being detected by a technologically superior life form somewhere in the Universe, we now seem to have the capability to do so. To me this is of modest long term interest as instead of protecting ourselves from aliens, we really need to protect ourselves from ourselves relative to Climate Change.